Sex pheromone of European corn borer. |
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Authors: | Aránzazu Peña Heinrich Arn Hans-Rudolf Buser Stefan Rauscher Franz Bigler Roberto Brunetti Stefano Maini Miklós Tóth |
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Affiliation: | (1) Swiss Federal Research Station, CH-8820 Wädenswil, Switzerland;(2) Swiss Federal Research Station, CH-8046 Zürich, Switzerland;(3) Servizio fitosanitario cantonale, CH-6500 Bellinzona, Switzerland;(4) Università degli Studi, I-40126 Bologna, Italy;(5) Research Institute of Plant Protection, H-1525 Budapest, Hungary |
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Abstract: | Sex gland extracts ofOstrinia nubilalis females collected in the wild or laboratory-reared from Switzerland, Italy, and Hungary were analyzed. Individuals collected in the north of Switzerland contained (Z)- and (E)-11-tetradecenyl acetate at the approximate ratio of 97 3 (Z type), in accordance with field responses of males and previous findings. On the other hand, females from a laboratory culture derived from field collections made in the same area and reared for four to five generations contained theZ andE isomers at ratios of ca. 3 97 and 35 65, respectively. In the south, one of the eight wild females analyzed was of theZ type and the rest intermediate, whereas males were predominantly trapped with blends of the two isomers containing 60 to 97E. In a laboratory culture reared for one to two generations from corn borers collected in Hungary, three of nine females were of the intermediate type and the restZ. Small amounts of (Z)-11-hexadecenyl acetate were detected in female glands of theE strain; however, no effect of this compound could be observed in the field. |
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Keywords: | Sex pheromone European corn borer Ostrinia nubilalis Lepidoptera Pyralidae (Z)-11-tetradecenyl acetate (E)-11-tetradecenyl acetate (Z)-11-hexadecenyl acetate |
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